Tehran will not give in to demands from the world powers for restrictions on its "peaceful" nuclear programme, according to Iranian Majlis (parliament) speaker.
The Islamic republic will not accept any limitation on its nuclear case but it is open to "logical" transparency measures asserted by the Iranian officials, Xinhua quoted Ali Larijani as saying at an open session of the Majlis.
He urged other parties engaged in the nuclear talks to avoid resorting to what he called "deceptive acts" in the course of negotiations.
On Saturday, Abbas Araqchi, senior Iranian nuclear negotiator, said Iran would not retreat an iota from its nuclear rights in the run-up to a possible comprehensive deal with powers.
Iran and the P5+1 group, which includes Britain, China, France, Russia, the US plus Germany, agreed in July to extend the talks for another four months till Nov 24, as they could not narrow down significant gaps on core issues during the past six months.
The two sides met again last week for three days in Austria's Vienna without any major breakthrough.